CVE-2025-27807Network attack vector

Memory corruption via unchecked NAS packet length

Published Jan 5, 2026 · Updated Jan 5, 2026

Out-of-bounds writes in the NAS component of affected Samsung Exynos processors and modems allow remote attackers to corrupt memory. NAS packet handling omits a required length check before writing data derived from malformed packets beyond its intended buffer. No authentication or user interaction is required, but public sources do not identify affected firmware versions or establish code execution.

CVSS severity9.1
Critical
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds writes in the NAS component of affected Samsung Exynos processors and modems allow remote attackers to corrupt memory. NAS packet handling omits a required length check before writing data derived from malformed packets beyond its intended buffer. No authentication or user interaction is required, but public sources do not identify affected firmware versions or establish code execution.

The record

CVE
CVE-2025-27807
Published
Jan 5, 2026
Updated
Jan 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1664
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1664Exploitation for Initial Access

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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